[Stoves] Green Steam Engine

[Bryce L Nordgren]

I think this discussion of "boiler inspectors" may not be appropriate for
commercial systems which integrate that steam turbine device, if for no
other reason than that would be a self-defeating activity. I would imagine
that the only way they could be successful would be to meet UL and CE
standards for selling steam devices to the unwashed masses (like espresso
machines).

It's not like it's a choice between risking death or not. Risk a steam
explosion or risk a natural gas explosion. Or an electrical fire. Or CO
poisoning. Or chimney fires. Furnaces manage large energy fluxes, and large
energy fluxes have the potential to go sideways. Presumably this enterprise
will only take off if the risk can be mitigated to a similar level.

But if your point was "don't screw around with steam on your own", it's
well taken.  :) Rest assured that was never my intention.

Bryce

On Wed, May 15, 2013 at 2:58 PM, Kevin <kchisholm at ca.inter.net> wrote:

> **
> Dear Bryce
>
> Certainly a "Closed Loop" or "condensing system" is more efficient than an
> non-condensing system.
>
> While the steam engine may not require Certification, boilers do,
> depending on the rules in a given Jurisdiction. While it is certainly
> possible to operate a steam boiler "in a back woods location that the
> Boiler Inspector doesn't know about", The Boiler Inspector will find out if
> there is an accident where someone is seriously injured or killed.
>
> Steam can kill.
>
> If anyone is considering a "Steam Application" they should check with
> their Boiler Inspector, to confirm that he would be able to approve the
> Proposed Project.
>
> Best wishes,
>
> Kevin
>
> ----- Original Message -----
> *From:* Bryce L Nordgren <bnordgren at gmail.com>
> *To:* Discussion of biomass cooking stoves<stoves at lists.bioenergylists.org>
> *Sent:* Wednesday, May 15, 2013 5:16 PM
> *Subject:* Re: [Stoves] Green Steam Engine
>
> Hi Kevin,
>
> Thanks for the lesson. Spent a little time googling and wikipediaing. I
> may have a slightly better grasp of the topic now.
>
> I did find something which may be worth looking at:
>
> http://www.greenturbine.eu/en/product.php
>
> These appear to be self-contained turbines with a closed loop
> steam/feedwater condenser system at 1.2, 2.4, and 15 kW. Steam is supplied
> at ~5 bar and the condenser side is ~.1 bar. They sell primarily to systems
> integrators, one of which makes a CHP wood pellet furnace w/cogen. (
> http://www.greengen.be/) I wonder if they would sell to APL and/or if APL
> would have any interest in making a steam turbine genset...
>
> Bryce
>
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